A new dichlorobridged dimeric Cu(Ⅱ)complex bearing 2,2?-(1H-1,2,4-triazole-1,3-diyl)dipyridine ligands has been synthesized.Its structure has been characterized by X-ray single-crystal diffraction.New Cu(Ⅱ)complex c...A new dichlorobridged dimeric Cu(Ⅱ)complex bearing 2,2?-(1H-1,2,4-triazole-1,3-diyl)dipyridine ligands has been synthesized.Its structure has been characterized by X-ray single-crystal diffraction.New Cu(Ⅱ)complex crystallizes in triclinic system,space group P1 with a=7.5080(11),b=10.5954(13),c=12.4383(15)?,α=76.320(10),β=74.826(11),γ=70.517(12)°,V=888.1(2)?3,Z=2,ρcalc=1.784 g/cm3,μ=1.987 mm–1,F(000)=474,the final R=0.1010 and wR=0.1520 for 5688 observed reflections(I>2s(I)),R(all data)=0.1872,wR(all data)=0.1806,completeness to theta of 25.010 is 100.0%and GOF=1.060.Furthermore,the dichlorobridged dimeric Cu(Ⅱ)complex showed high catalytic activity for the Ullmann coupling reaction of(hetero)aryl chlorides with various N(H)-heterocycles.展开更多
Bulky azole ligands in combination with PdCl2 provide three new palladium(II)complexes.All these complexes,as pre-catalysts,have high catalytic efficiency for the Suzuki-Miyaura cross-coupling reactions of sterically ...Bulky azole ligands in combination with PdCl2 provide three new palladium(II)complexes.All these complexes,as pre-catalysts,have high catalytic efficiency for the Suzuki-Miyaura cross-coupling reactions of sterically hindered aryl chlorides and good to high yields are obtained with low catalysts loadings(0.1 mol%)under mild conditions in air.展开更多
A new Cu(Ⅱ) complex,[Cu_(4)Cl_(6)O(1-TrTz)_(4)]where 1-TrTz is 1-trityl-1H-[1,2,4]triazole,was synthesized by the reaction of 1-trityl-1H-[1,2,4]triazole with two hydrated cupric chlorides,and its structure was chara...A new Cu(Ⅱ) complex,[Cu_(4)Cl_(6)O(1-TrTz)_(4)]where 1-TrTz is 1-trityl-1H-[1,2,4]triazole,was synthesized by the reaction of 1-trityl-1H-[1,2,4]triazole with two hydrated cupric chlorides,and its structure was characterized by X-ray single-crystal diffraction.[Cu4Cl6O(1-TrTz)4]is of monoclinic system,space group P21/c,a=12.5024(13),b=26.400(3),c=28.588(3)A,β=112.807(4)°,V=8698.1(16)A^(3),Z=4,ρcalc=1.411 g/cm^(3),μ=1.265 mm^(–1),F(000)=3772,the final R=0.1293 and w R=0.3644 for 55774 observed reflections (I>2s(I)),R(all data)=0.1972,w R(all data)=0.3989,completeness to theta of 25.242 is 99.9%and GOF=1.103.In the structure of[Cu_(4)Cl_(6)O(1-TrTz)_(4)],the central O atom is tetrahedral and is coordinated with four Cu atoms.The distance between copper and oxygen bond is 1.909(6)A.In addition,the catalytic property of this complex was investigated and it could effectively catalyze the Ullmann coupling reaction of various (hetero)aryl chlorides with azoles.展开更多
基金Supported by the Natural Science Foundation of Tianjin(No.16JCYBJC19700)the National Natural Science Foundation of China(No.21771138)。
文摘A new dichlorobridged dimeric Cu(Ⅱ)complex bearing 2,2?-(1H-1,2,4-triazole-1,3-diyl)dipyridine ligands has been synthesized.Its structure has been characterized by X-ray single-crystal diffraction.New Cu(Ⅱ)complex crystallizes in triclinic system,space group P1 with a=7.5080(11),b=10.5954(13),c=12.4383(15)?,α=76.320(10),β=74.826(11),γ=70.517(12)°,V=888.1(2)?3,Z=2,ρcalc=1.784 g/cm3,μ=1.987 mm–1,F(000)=474,the final R=0.1010 and wR=0.1520 for 5688 observed reflections(I>2s(I)),R(all data)=0.1872,wR(all data)=0.1806,completeness to theta of 25.010 is 100.0%and GOF=1.060.Furthermore,the dichlorobridged dimeric Cu(Ⅱ)complex showed high catalytic activity for the Ullmann coupling reaction of(hetero)aryl chlorides with various N(H)-heterocycles.
基金Supported by the Natural Science Foundation of Tianjin(No.16JCYBJC19700)the National Natural Science Foundation of China(No.21771138)。
文摘Bulky azole ligands in combination with PdCl2 provide three new palladium(II)complexes.All these complexes,as pre-catalysts,have high catalytic efficiency for the Suzuki-Miyaura cross-coupling reactions of sterically hindered aryl chlorides and good to high yields are obtained with low catalysts loadings(0.1 mol%)under mild conditions in air.
基金Supported by the Natural Science Foundation of Tianjin (No.16JCYBJC19700)the National Natural Science Foundation of China (No.21771138)。
文摘A new Cu(Ⅱ) complex,[Cu_(4)Cl_(6)O(1-TrTz)_(4)]where 1-TrTz is 1-trityl-1H-[1,2,4]triazole,was synthesized by the reaction of 1-trityl-1H-[1,2,4]triazole with two hydrated cupric chlorides,and its structure was characterized by X-ray single-crystal diffraction.[Cu4Cl6O(1-TrTz)4]is of monoclinic system,space group P21/c,a=12.5024(13),b=26.400(3),c=28.588(3)A,β=112.807(4)°,V=8698.1(16)A^(3),Z=4,ρcalc=1.411 g/cm^(3),μ=1.265 mm^(–1),F(000)=3772,the final R=0.1293 and w R=0.3644 for 55774 observed reflections (I>2s(I)),R(all data)=0.1972,w R(all data)=0.3989,completeness to theta of 25.242 is 99.9%and GOF=1.103.In the structure of[Cu_(4)Cl_(6)O(1-TrTz)_(4)],the central O atom is tetrahedral and is coordinated with four Cu atoms.The distance between copper and oxygen bond is 1.909(6)A.In addition,the catalytic property of this complex was investigated and it could effectively catalyze the Ullmann coupling reaction of various (hetero)aryl chlorides with azoles.
